Q3: A 1,0 W point source emits sound waves isotopically. Assuming that the energy of the waves is conserved, find the intensity (a) 1.0 m from the source and (b) 2.5 m from the source. (Hint: the area of the sphere is 4xr')
Q: The faintest sound detectable by the human ear has an intensity of about 1x10W/m. a) Find the…
A: The relation between the intensity and pressure is, I=P22vρ Here, I is the intensity, P is the…
Q: Problem 3: The human ear can detect a minimum intensity of Io = 10-12 W/m2, which has a sound…
A: Given that:3) Io=10-12 W/m2β=454) β1=87 dB, P1=0.5 W, β2=95 dB, P2=?
Q: A sound wave with intensity 2 x 10 -3 W/m2 is perceived to be modestly loud. Your eardrum is 6 mm in…
A: Intensity of sound (I) = 0.002 Wm2Diameter of eardrum (d) = 6 mm
Q: A loudspeaker has a circular opening with a radius of 0.1308 m. The electrical power needed to…
A: radius of circular opening = 0.1308 m Electrical power needed to operate the speaker = 37.4 W Sound…
Q: A loudspeaker emits sound waves isotropically (uniformly in all directions). The average acoustic…
A: Given that The average acoustic power delivered by the loudspeaker is Ps_av=5.00 W and distance…
Q: A person wears a hearing aid that uniformly increases the intensity level of all audible frequencies…
A: Increase in dB level, B2 - B1 = 30.0 dB The intensity picked up by the hearing aid, I1 = 3.9×10-10…
Q: in 20°C air has a pressure amplitude of 0.800 Pa. What is the intensity of the wave? (Assume the…
A: Given:- The temperature T = 20oC = 20+273 = 293 K The pressure amplitude is P = 0.800 Pa The…
Q: High‑intensity focused ultrasound (HIFU) is one treatment for certain types of cancer. During the…
A:
Q: A sound wave has intensity I, measured in units W/m^2. Show how to convert this intensity, I, to dB.
A: Given:- A sound wave has an intensity I. The unit of intensity is W/m2. Find:- Show how to convert…
Q: A sound source that radiates equally in all directions has an intensity of 48 dB at a distance of 23…
A: (a) Let L1 denotes the intensity level at distance r1, I1 denotes the intensity, I0 denotes the…
Q: A drum head has a diameter of 22.0 cm. The intensity of sound at the drum’s location due to a…
A: Solution - Power as the rate of doing work, it is the work done in unit time. Power is a scalar…
Q: The low-frequency speaker of a stereo set has a surface area of 0.05 m2 and produces 1W of…
A: Given: The surface area of the stereo set =0.05 m2 The stereo set produces 1 W of acoustical power…
Q: A bat emits a chirping sound of frequency 67.0 Hz while moth hunting. The chirp lasts for 1.0 ms and…
A: Velocity of sound
Q: The low-frequency speaker of a stereo set has a surface area of 0.04 m2 and produces 1.13 W of…
A:
Q: You hear a song from your playlist you haven't heard in a while and it warrants you to commence…
A: Power (P) = 309.66 nW distance (r) = 9.48 m
Q: A typical adult ear has a surface area of 2.1×10-3m2. The sound intensity during a normal…
A: Area, A = 2.1×10-3 m²Intensity, I = 3.2×10-6 W/m²Power, P = ?
Q: is 0.76 W/m2. Assuming a circular eardrum, what is the radius of the student’s eardrum, in…
A: EXPLANATION AND SOLUTION
Q: You work at a building site and the noise level has been measured at 95 dB. You need to wear…
A:
Q: You hear a song from your playlist you haven't heard in a while and it warrants you to commence…
A: Power of compression wave (P) = 309.66 nW distance (d) = 9.48 m
Q: A jogger runs at 7 m/s, and is trailed by a bumblebee moving at 5 m/s and emitting a frequency of…
A:
Q: The intensity of a sound wave emitted by a radio is 5.00 µW/m2. What is the sound level (in dB)?
A:
Q: High‑intensity focused ultrasound (HIFU) is one treatment for certain types of cancer. During the…
A: We have to use some basic formula.
Q: On its highest power setting, a certain microwave oven projects 1.00 kW of microwaves onto a 30.0 by…
A: Given data The Highest power setting of the microwave is given as P = 1 kW = 1 x 103 W. The area of…
Q: Dolphins rely on echolocation to be able to survive in the ocean. In a 20∘C20∘C ocean, a dolphin…
A:
Q: A typical adult ear has a surface area of 1.90 × 10³ m². The sound intensity during a normal…
A: The ear surface area A = 1.90 × 10- 3 m2 Sound intensity I = 2.04 × 10- 6 W/m2
Q: As we said, sound waves can be modeled with sine waves. The standard musical pitch is the A440 which…
A:
Q: The low-frequency speaker of a stereo set has a surface area of 0.05 m2 and produces 1W of…
A: Given data The area of the surface is A=0.05 m2 The acoustical power is P=1 W The intensity at…
Q: Under favorable conditions, the human eye can detect light waves with intensities as low as 2.50 x…
A:
Q: A typical adult ear has a surface area of 1.41 × 10-3 m2. The sound intensity during a normal…
A:
Q: A certain source of sound waves radiates uniformly in all directions. At a distance of 20 m from the…
A:
Q: Ultrasound is absorbed in the body; this complicates the use of ultrasound to image tissues. The…
A:
Q: typical eardrum is 8.9mm in diameter. You have a speaker that can produce 280W of sound energy. The…
A:
Q: (a) If P bulb is the radiated power, and r is the radius of the circle, which expression gives the…
A: **as per our company guidelines we are supposed to answer only first 3 sub-parts. Kindly repost…
Q: You and a friend are watching fireworks that are launching from Grant Park.You are standing right in…
A: The inverse square law for sound intensity states that the intensity of a sound wave decreases with…
Q: Two students are standing the same distance from the source of the sound. The first student receives…
A:
Q: Dolphins rely on echolocation to be able to survive in the ocean. In a 20 °C ocean, a dolphin…
A:
Q: the output power of a spherically symmetric sound source is 6.0 W. the decibel level at a distance d…
A:
Q: A typical adult ear has a surface area of 1.36 × 10-3 m2. The sound intensity during a normal…
A: It is given that,
Q: A 38.0-Hz sound wave is barely audible at a sound intensity level of 60.0 dB. The density of air at…
A: The frequency of the sound wave is f=38.0 Hz The sound intensity level is L=60 dB The density of air…
Q: You hear a song from your playlist you haven't heard in a while and it warrants you to commence…
A: Given:- The power of the compression wave P = 297.02 nW (Nano watts) your roommate who is…
Q: A point source emits 30.0 W of sound isotropically. A small microphone intercepts the sound in an…
A: Power intercepted at a distance from a point source depends on the distance from the source and area…
Q: After years of being alone and never getting a single phone call, Daniel understandably forgets to…
A:
Q: A loud vacuum cleaner outputs 1.5 mW of sound energy. What is the intensity of the sound wave 2.0…
A:
Q: A bell produces sound energy at a rate of 0.3 mW and radiates it uniformly in all directions. What…
A: Given: Power P=0.3 mW, Distance r=20 m. Required: Intensity level β of the wave. The sound energy is…
Q: 30 seconds of exposure to 115 dB sound can damage your hearing, but a much quieter 94 dB may begin…
A: the intensity can be calculated as follows, β=10 dBlogII0I=I010β10 dB=1×10-12 W/m21094 dB10…
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